HRESULT 0x80040012 (TAPI_E_INVALCOMPLETIONID): meaning

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TAPI call-completion identifier is invalid

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Constant	Type	OS
OLE_E_NOSTORAGE	HRESULT	Windows

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OLE_E_NOSTORAGE	TAPI_E_INVALCOUNTRYCODE

TAPI_E_INVALCOMPLETIONID

TAPI call-completion identifier is invalid

TAPI_E_INVALCOMPLETIONID is HRESULT 2147745810 (0x80040012) from TAPI 3.0. AllStat describes it as “Invalid call completion ID.” The result belongs to cancelling or querying a previously registered call-completion request. The important boundary is not merely failure but which object and state transition established: the completion ID does not identify an active completion request in the current provider context.

The decisive meaning of this result is that the completion ID does not identify an active completion request in the current provider context. The severity bit does not decide handling; the controlling fact is that the completion ID does not identify an active completion request in the current provider context. Interpret it at the native boundary before a wrapper hides the condition that the completion ID does not identify an active completion request in the current provider context.

Where the result appears

This result can surface in a TAPI 3 address, call-control, terminal, stream, conference, dialing, or completion-management code.
map the failure to one concrete operation among ITTAPI, ITAddress, ITBasicCallControl, ITCallInfo, terminal and stream interfaces, provider events, and asynchronous request state.
Preserve provider name and version, address and call IDs, device class, media type, privilege, current address and call states, and asynchronous request ID before releasing or replacing the object that returned this result.

An incident record for this HRESULT must distinguish caller, runtime, provider, and backing resource while testing whether the completion ID does not identify an active completion request in the current provider context.

Typical causes and interpretation boundary

The immediate contract boundary is specific: the completion ID does not identify an active completion request in the current provider context. Common cause branches include the following:

The request already completed or was cancelled.
The ID belongs to another line or application session.
Provider reinitialization invalidated outstanding IDs.

Confirm the cause branch that explains why the completion ID does not identify an active completion request in the current provider context by using call arguments, object state, metadata, device information, or provider traces.

Correct handling and recovery

The primary recovery is to scope IDs to the creating session and line, remove them after terminal events, and make cancellation tolerant of already-finished requests. The result failure report should expose enough cancelling or querying a previously registered call-completion request state to understand why the completion ID does not identify an active completion request in the current provider context without a production debugger.

Retry this result only when evidence shows the state behind “the completion ID does not identify an active completion request in the current provider context” can change and the operation is repeatable. Reconcile persistent, remote, device, or ownership state before repeating it.

Practical scenario

After telephony service restart, a client tries to cancel a completion ID from the previous session and instead clears its stale local table. Record the decisive state for this HRESULT and verify recovery on a fresh object or request generation.

Difference from related HRESULTs

TAPI_E_COMPLETIONOVERRUN reports too many pending completions; it rejects one supplied identifier Tests and telemetry should preserve that boundary for this HRESULT.

Developer and administrator guidance

Developers handling it should make object lifetime and state transitions explicit, preserve the native HRESULT, and keep cleanup paths safe when initialization or output is partial. Use a controllable service provider or simulator to cover state races, capability differences, device removal, cancellation, and provider restart.

Administrators should repair the component owning cancelling or querying a previously registered call-completion request as a versioned unit instead of copying arbitrary DLLs. Repair for this HRESULT should target only the evidence-backed component, provider, document, device, or configuration.

References

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